JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. This Go/No-Go gauge helps machinists, engineers, and quality teams quickly verify hole tolerances to ensure parts thread cleanly and assemble with confidence.

Built for reliability in busy shops, this right-hand gauge is specified for 6G tolerance with an M14 x 1.5 pitch, ensuring compatibility with common metric holes and components. Crafted from hardened steel, it delivers long-lasting performance and excellent wear resistance, even under frequent use.

• Go/No-Go quick checks: Two simple checks—“Go” and “No-Go”—let you confirm minimum and maximum material allowances in seconds, speeding up quality control and reducing guesswork.
• Hardened steel construction: Durable, wear-resistant body stands up to daily use, helping maintain accurate measurements and extending tool life over thousands of inspections.
• Metric fine-thread compatibility (Right Hand, 6G, M14 x 1.5): Precisely sized for common metric holes, delivering repeatable results and easy integration into standard machining and inspection workflows.

Together, this gauge provides a dependable, efficient way to verify thread fit during assembly and manufacturing. It helps you reduce downtime, improve part consistency, and instill confidence in your measurements across production runs and quality checks.